Waterproofing.



C. V. EADES. WATERPROOFNG. APPLICATION FILED MAR. 2a. 1914.

Patented Dec. 12, 10H5.

CHARLES V. EDES,

RUBBER COMP or NEW JERSEY.

WATERPROOFING.

asoman.'

Specification of Letters Patent.

rateatea nee. la, raler.

'Application led March 28, 19M. Serial No. 82eme.. i

To all whom it may concern Be it known that I, CHARLES V. Enoes, acitizen of the United States, residing in the city of Chicago, county ofCook, and State of Illinois, have invented certain new and usefulImprovements in Waterproofing, of which the following is aspecification.

My invention relates to improvements in water-proofing and has among itssalient objects to provide a construction which is ladapted for roofingsuch as concrete roofs and roofs of bridges, viaducts and the like; toprovide a construction in which the upper or wearing surface of thewater-proofing is secured to the foundation by an elastic bond ormembrane which allows for contraction or expansion to obviate crackingor breaking of the other members of the water-proofing; to provide aconstruction in which the membrane becomes any integral mass bonded tothe foundation and to the protection or upper coating if any; to providea construction which has as an essential feature a pair of flexiblefabric members united by a binder of bituminous putty; to provide aconstruc` tion which when used for roofs of railway bridges or viaductsis peculiarly adapted to deaden noise and absorb shocks. while at thesame time aHording a hrm and substantial base for the ballast and track;andin general to provide an improved construction 0f the characterreferred to. v

The invention consists in the matters hereinafter described and moreparticularly pointed out in the appended claims.

In the drawings, Figure 1. is a sectional view with parts broken awayshowing the invention as applied to a concrete roof; Fig. 2 is anenlarged sectional detail of the portion of the membrane; Fig. 3 is avertical sectional view showing the invention in use on the roof of arailway viaduct or bridge.

Referring first to the construction shown in Figs. 1 and 2, 1 designatesas a whole the concrete roof, although the material of which the roof ismade is not important. rIhis concrete foundation is first covered with apaint or primer coat 2 of liquid asphaltic paint which intimatelymixeswith the upper surface of the foundation. On this paint coating isnext put a mop or binder coat 3 of solid yasphalt which is heated untilliquid and then poured on the primer coat 2 to the vdesired thickness.It is to be noted that the primer coat is a vary widely with conditions.

invention to a railway bridge or viaduct.

liquid one when cold while the mo coat is l rl'ot liquid when it isheated above its melting point. 'Ihe melting point of the mop coat maybe about 1.80D F., although this will vary as conditions may require.Both the -)paint coat and the mop coat may consist of blown oil'asphaltic compounds and the mop coat particularly should be water-proofi and not subject to extremes of weather. 'Io this mop coat while stillhot is applied a flexible fabric l suchwas burlap which sticks andadheres to the mop coat. Above the fabric 4f is a second similar fabric6, the

two being separated from eachother and "united by means of an asphalticbond 5 which is or may be of bituminous putty, consisting essentially ofa mixture of lime dust and asphalt. rIhe melting point-of the bond maybe about 165 F., although this too will Upon the upper face of thefabric 6 is placed a second mop coat 7, similar to the mop coat 3heretofore described. @n top of this mop coat 7 is placed a fabriccovering 8 which may consist of felt saturated with asphalt. Ihe variouscoats heretofore described form a membrane, the members of which are soconnected and bonded together with each nl rig; a is Shown theapplication or the In this instance, there is the same foundation I,uponwhich is formed the membrane heretofore described, designated as awhole A. Upon this membrane is supported the rock or other ballast 9between which and the top covering of the membrane is interposed amastic 10 which assists in forming a shock absorber. rI`his masticcoating 10 is preferably formed of bituminous concrete. melting point ofthis mastic coating may be 450 F., although this will vary and hence itis essential to have the top asphalt saturated felt coating 8 interposedbetween the mastic and the mop coat and bituminous putty. 'Ihis isobvious for the reason that the melting'point of the mastic is so highthat'when applied hot the mop coat and bitum'inous putty would meltfabric through the mastic if there was no protection between such as thecovering 8'. 'Ihe bituminous bond 5 is flexible evenbelow zero andmaterially assists in the matter of expansion and contraction anddeadens sound, particularly when used beneath railway ballast. The bond5 forms in e'ifect a bituminous cushion bonding the two flexible fabrics4 and 6. VThe mop coats not. onlyv waterproof the outer surfacel of thefabrics, but also serve to bind the same to the foundation, and to thefelt covering 8. The object of using the fabric is to prevent the`membrane from breaking through when subljected to severe torsionalstrains or severe shocks. The primer or paint coat cleans the foundationand closes 'the pores and re- -cesses of the upper surfaces of the sameand 'makes an anchorage for the subsequent coatn integral member as willbe obvious from the foregoing description.

The invention is not limited to the details of construction shown exceptas set forth in the appended claims.

I claim as my invention:

'1. In a waterproofing, the combination with a foundation, of `a paintcoat on the upper-surface of said foundation, a pair of asphaltic mopcoats, flexible fabrics between the mop coats and a bituminous cushionbetween said fabrics, said.I cushion and coats uniting with each otherto form a substantially unitary structure.'

2. In a waterproofing, the combination with a rigid foundation, of apairof bituminous saturated fabrics on said foundation, a relativelythick bituminous cement lbond coat interposed between the fabrics andbituminous mop coats above and below the fabrics.

' CHARLES V. EADES. Witnesses:

JOYCE M. LUTz, F. L. BELKNAP.

